PRONAR T679/5, Operator'S Manual, Page: 98 / 116

PRONAR T679/5 SECTION 5
5.26
Switch off the tractor's engine and check all hydraulic cylinders for tightness.
If oil is found on hydraulic cylinder body, check origin of leak. Inspect hydraulic seals when
hydraulic cylinder is completely extended. Minimum leaks are permissible with symptoms of
"sweating". However, if leaks in the form of "droplets" are noticed, stop using the trailer. If
leaks appear at connections then tighten the connections. If the leak at connections is not
removed, replace conduit, connector and seals (depending on place of leakage).
INSPECTION
•
After the first week of use.
•
Every 12 months.
5.5.3 CHECKING TECHNICAL CONDITION OF HYDRAULIC
COUPLERS AND SOCKETS.
Hydraulic connections must be technically reliable and kept in a clean condition. Each time
before connecting, check if sockets in tractor are maintained in good working condition.
Hydraulic systems of the tractor and trailer are sensitive to the presence of permanent
contamination, which may cause damage to precision system components.
INSPECTION
•
Each time before connecting trailer to tractor or before connecting
the second trailer.
5.5.4 REPLACEMENT OF HYDRAULIC CONDUITS
INSPECTION
•
Every 4 years.
Rubber hydraulic conduits must be replaced every 4 years regardless of their technical
condition. This should be done in specialised workshops.